Axino dark matter with R-parity violation and 130 GeV gamma-ray line

Motoi Endo; Koichi Hamaguchi; Seng Pei Liew; Kyohei Mukaida; Kazunori Nakayama

doi:10.1016/j.physletb.2013.03.008

Axino dark matter with R-parity violation and 130 GeV gamma-ray line

Motoi Endo, Koichi Hamaguchi, Seng Pei Liew, Kyohei Mukaida, Kazunori Nakayama

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

We show that decaying axino dark matter with R-parity violation can explain the observed excess of the 130 GeV gamma-ray line from the Galactic center in the Fermi data. The branching fraction of the axino decay into monochromatic photons can be O(1), and constraints from continuum gamma-rays and the anti-proton flux are ameliorated. The Pecce-Quinn scale of O(10¹³-10¹⁴) GeV and the R-parity violation parameter of O(10^-12-10^-11) are cosmologically favored.

Original language	English
Pages (from-to)	111-117
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	721
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physletb.2013.03.008
Publication status	Published - 2013 Apr 10
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2013.03.008

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title = "Axino dark matter with R-parity violation and 130 GeV gamma-ray line",

abstract = "We show that decaying axino dark matter with R-parity violation can explain the observed excess of the 130 GeV gamma-ray line from the Galactic center in the Fermi data. The branching fraction of the axino decay into monochromatic photons can be O(1), and constraints from continuum gamma-rays and the anti-proton flux are ameliorated. The Pecce-Quinn scale of O(1013-1014) GeV and the R-parity violation parameter of O(10-12-10-11) are cosmologically favored.",

author = "Motoi Endo and Koichi Hamaguchi and Liew, {Seng Pei} and Kyohei Mukaida and Kazunori Nakayama",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant No. 23740172 (M.E.), No. 21740164 (K.H.), No. 22244021 (K.H.), No. 22244030 (K.N.) and by the MEXT Grant-in-Aid No. 21111006 (K.N.). The work of K.M. is supported in part by JSPS Research Fellowships for Young Scientists . This work was supported by World Premier International Research Center Initiative (WPI Initiative), MEXT , Japan. ",

year = "2013",

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doi = "10.1016/j.physletb.2013.03.008",

language = "English",

volume = "721",

pages = "111--117",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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TY - JOUR

T1 - Axino dark matter with R-parity violation and 130 GeV gamma-ray line

AU - Endo, Motoi

AU - Hamaguchi, Koichi

AU - Liew, Seng Pei

AU - Mukaida, Kyohei

AU - Nakayama, Kazunori

N1 - Funding Information: This work was supported by JSPS KAKENHI Grant No. 23740172 (M.E.), No. 21740164 (K.H.), No. 22244021 (K.H.), No. 22244030 (K.N.) and by the MEXT Grant-in-Aid No. 21111006 (K.N.). The work of K.M. is supported in part by JSPS Research Fellowships for Young Scientists . This work was supported by World Premier International Research Center Initiative (WPI Initiative), MEXT , Japan.

PY - 2013/4/10

Y1 - 2013/4/10

N2 - We show that decaying axino dark matter with R-parity violation can explain the observed excess of the 130 GeV gamma-ray line from the Galactic center in the Fermi data. The branching fraction of the axino decay into monochromatic photons can be O(1), and constraints from continuum gamma-rays and the anti-proton flux are ameliorated. The Pecce-Quinn scale of O(1013-1014) GeV and the R-parity violation parameter of O(10-12-10-11) are cosmologically favored.

AB - We show that decaying axino dark matter with R-parity violation can explain the observed excess of the 130 GeV gamma-ray line from the Galactic center in the Fermi data. The branching fraction of the axino decay into monochromatic photons can be O(1), and constraints from continuum gamma-rays and the anti-proton flux are ameliorated. The Pecce-Quinn scale of O(1013-1014) GeV and the R-parity violation parameter of O(10-12-10-11) are cosmologically favored.

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DO - 10.1016/j.physletb.2013.03.008

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -

Axino dark matter with R-parity violation and 130 GeV gamma-ray line

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